Andriy Pavlovych, Wolfgang Stürzlinger. Model for non-expert text entry speed on 12-button phone keypads. In Elizabeth Dykstra-Erickson, Manfred Tscheligi, editors, Proceedings of the 2004 Conference on Human Factors in Computing Systems, CHI 2004, Vienna, Austria, April 24 - 29, 2004. pages 351-358, ACM, 2004. [doi]
Abstract is missing.